Complexes With Strong Two Photon Absorption: Synthesis, Structure And Properties Of Complexes Derived From The Ligands S-Methylenedithiocarbazates

Strong two-photon absorption (TPA) materials have received great attentions because of their increasing application foreground in three-dimension data storage, TPA microstructure fabrication, photodynamic therapy and TPA up-converted materials. Design and synthesis of materials with strong TPA and large TPA cross-section has become main target.Base on the investigation of the latest research work, we find that a series of S-Methylenedithiocarbazate Ni(II) complexes and Cu(II) complexes have good TPA coefficient and large TPA cross-section, and we have obtained all the o ranging from 1.5 to 2.2*10-46 cm4 . s . photon-1. It is expected that the class compounds will occupy important position, because they can be easily synthesized and have good physical and chemical stability. So, it is necessary to further research this field.The thesis includes three chapters:In the first chapter, based on investigations of a great deal of literatures, the characteristics of strong TPA materials have been reviewed, which provide essential and basic help.In the second chapter, all compounds we have systematically studied the synthesis and character of a series of S- Methylenedithiocarbazate and their complex are introduced. We obtained 34 new compounds in all, including 30 title compounds, and all compounds have been charactered with IR, Element Analysis and Electron Absorption Spectra.In the third chapter, all compounds of their linear optical and nonlinear optical properties had been studied and analysed.In conclusion, this work may provide some important information on molecule design of new TPA materials.